Last August, the Republican presidential contender Mitt Romney performed what has become a quadrennial rite of passage in American presidential politics: he delivered a speech to the annual convention of the Veterans of Foreign Wars. His message was rooted in another grand American tradition: hyping foreign threats to the United States. It is “wishful thinking,” Romney declared, “that the world is becoming a safer place. The opposite is true. Consider simply the jihadists, a near-nuclear Iran, a turbulent Middle East, an unstable Pakistan, a delusional North Korea, an assertive Russia, and an emerging global power called China. No, the world is not becoming safer.”

Not long after, U.S. Secretary of Defense Leon Panetta echoed Romney’s statement. In a lecture last October, Panetta warned of threats arising “from terrorism to nuclear proliferation; from rogue states to cyber attacks; from revolutions in the Middle East, to economic crisis in Europe, to the rise of new powers such as China and India. All of these changes represent security, geopolitical, economic, and demographic shifts in the international order that make the world more unpredictable, more volatile and, yes, more dangerous.” General Martin Dempsey, chairman of the Joint Chiefs of Staff, concurred in a recent speech, arguing that “the number and kinds of threats we face have increased significantly.” And U.S. Secretary of State Hillary Clinton reinforced the point by claiming that America resides today in a “very complex, dangerous world.”

Within the foreign policy elite, there exists a pervasive belief that the post–Cold War world is a treacherous place, full of great uncertainty and grave risks. A 2009 survey conducted by the Pew Research Center for the People and the Press found that 69 percent of members of the Council on Foreign Relations believed that for the United States at that moment, the world was either as dangerous as or more dangerous than it was during the Cold War. Similarly, in 2008, the Center for American Progress surveyed more than 100 foreign policy experts